architecture

name	architecture
description	Maintain and extend the Byg Nemt Selv frontend architecture with lowercase component folders, SCSS-first source files, strict semantic HTML, mobile-first styling, and JavaScript only when strictly necessary.

Architecture Skill

Use this skill when creating or updating frontend pages in this project.

Core Rules

1. Build with HTML + SCSS by default.
2. Add JavaScript only for behavior HTML/CSS cannot handle.
3. Keep each UI component in components/<component-name>/ with its own SCSS file.
4. Use lowercase folder names; use kebab-case for multi-word names.
5. Keep page HTML simple and readable.
6. Keep image assets in images/.
7. Load styles/global.css in frontend pages.
8. Follow mobile-first styling.
9. When building new pages/components, use index.html as the primary visual reference and keep the same overall look-and-feel unless the user explicitly requests a different style.

Semantic HTML Enforcement (Strict)

1. Use semantic layout tags (header, main, nav, section, article, aside, footer) where appropriate.
2. Use one h1 per page and maintain heading order without skipping levels.
3. Use a for navigation and button for actions; never clickable div/span.
4. Use real list markup (ul/ol + li) for lists.
5. Use form, label, and correct input types for inputs; every control needs an accessible label.
6. Prefer semantic elements over generic wrappers.
7. Prefer native semantics before ARIA.

Mobile-First Styling (Strict)

1. Write base styles for mobile first (small screens as default).
2. Scale up with @media (min-width: ...) breakpoints.
3. Do not start desktop-first with max-width overrides unless unavoidable.
4. Ensure spacing, typography, layout, and touch targets are usable on small screens first.

SCSS Convention (Strict)

1. Use @use in styles/global.scss to load component SCSS files.
2. Write SCSS mobile-first; keep media queries close to related selectors when possible.
3. Use nesting for pseudo-classes, pseudo-elements, modifiers, and tightly coupled child selectors.
4. Keep nesting shallow (target max 3 levels). If deeper nesting appears, refactor selector structure.
5. Use clear component naming (BEM-style preferred).
6. Keep component-specific styles inside the component SCSS file.
7. Keep global variables and tokens in styles/global.scss unless clearly component-specific.
8. Keep formatting clean: logical groups, consistent spacing, consistent property order.
9. Never manually edit styles/global.css. It is generated output.
10. When removing HTML markup, remove the corresponding unused SCSS selectors and dead style rules in the same change.
11. Prefer reusable, domain-neutral class names for new UI patterns so the same component classes can be reused across multiple pages.
12. Enforce form-to-guide parity: for any guide-xxxx.html, the referenced fields/content must always match the active input/options in the corresponding xxxx.html page.

Design Tokens (Strict)

1. Define global font-family, font-style tokens (for example weights and line-height), and color tokens in :root in styles/global.scss.
2. Use var(...) tokens in component SCSS instead of hardcoded color/font values.
3. Add new global tokens only when reused or clearly part of the design system.
4. Keep token names semantic (--color-text-primary, not --blue-500 unless palette mapping is intentional).

Example styles/global.scss imports:

@use "../components/header/header";
@use "../components/category-grid/category-grid";
@use "../components/category-card/category-card";

Build Workflow (Required)

• Run one-time build: npm run scss:build
• Run watch mode while developing: npm run dev
• styles/global.css is generated from styles/global.scss

When Extending

1. For a new section, create a new component folder first.
2. Add or extend static markup directly in HTML.
3. Add the component SCSS import to styles/global.scss.
4. Avoid inline styles unless strongly justified.
5. Validate semantic structure before finalizing.
6. Validate mobile behavior before desktop behavior.
7. Rebuild styles before finalizing: npm run scss:build.
8. If a paired form/guide page exists (xxxx.html + guide-xxxx.html), update both in the same change when fields/options are added, removed, or renamed.